ERA Calculators are one of the most useful pieces of software you can find for Baseball or Softball. It is easily the most complicated equation considering partial innings being figured in. The ERA or Earned Run Average = 9 x (Earned Runs Allowed/Total Innings Pitched)
Notice the 9 in the equation...It does not say Innings Per Game, it says 9. A lot of people assume that in Little League you only play 6 innings so your ERA should be figures off of 6 innings. This is just not true. ERA should always be calculated off of 9 innings to keep the statistic consistent between all leagues and age groups playing baseball.
One site has a great, free ERA calculator and that is TomorrowsPro.com. This site is nicely designed and incredibly easy to use. You enter in your pitching stats every game and the software will automatically store all of your results as well as recalculate your ERA and WHIP. It's a free site so you can't go wrong, but its very powerful at the same time.
